A Theoretical Model of Steady-State Flow of Fractured-vuggy Reservoir

The storage spaces of carbonate reservoir are complicated, it is difficult to describe the flow regularity of this reservoir, and the traditional dual-media seepage theory was not suitable for it. A theoretical model of steady-state flow of fractured-vuggy reservoir was developed, which based on the capillary model and the law of equivalent seepage resistance, and the pressure distribution and production rate were researched based on this model. The range of matrix, the parameters of the vugs and fractures, such as radius and the amount of the vugs, the width and length of fractures were investigated. An application analysis was carried out, combined with a practical reservoir. The results showed that the theoretical model of steady-state flow was reasonable.